Combination lamp and lottd speaker



April 5 1927.

F. C. CASWELL COMBINATION LAMP AND LOUD SPEAKER fizaerziar IIIIIIII 5 Filed Feb. 11, 1924 ted; Apr; 192v}- s UNITED STATES PATENT OFFICE.

FRED C. CASWELL, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ON E-HALF 'TO LAWRENCE F. FAGERSTROM. 0F MINNEAPOLIS, MINNESOTA.

COMBINATION LAMP AND LOUD SPEAKER.

Application filed February 11, 1924. Serial No. 691,944.

My invention relates to an improved combination lamp and loud speaker.

Following the recent rapid strides in the development of radio broadcasting and receiving equipment, numerous so-called loud speakers have been produced. These loud speakers largely include upright amplifying horns with the bells thereof directed horizontally or simple conical horns arranged with their axes approximately horizontally so that the sound may be thrown toward a listener or closely grouped listeners. Objections are raised against the conventional loud speakers, one of which is that the same cannot be equally well heard in all parts of a room when the device is placed centrally of the room as on a center table. Another objection is raised against metallic, grating sounds which are commonly amplified to an annoying degree.

One object of my invention is to combine a radio loudspeaker in a table, floor, ceiling or wall lamp, the combination of the two articles being so accomplished that certain elements of one article are supplanted by elements of the other, whereby duplication of parts is avoided and a compact, unitary, sightly and efiicient combination lamp and loud speaker is produced.

Another object is to supply in an article of the present nature an upright horn and a shade cupping the atmosphere, about the open end of the horn, said shade and horn uniting in amplifying the sounds from the reproducer and the latter serving to deflect the sounds in all directions, and temper the same.

- ,A further object is to provide an article of this. kind including an adjustable shutter device arranged transversely of the axis of the horn outlet and adapted tofivariably obstruct the assage of sound waves through the shade, t e adjustability of said device eflect in a given article according to the design and proportion thereof and to the mate rial employed in the shade.

A further object is to provide for an assemblage of parts wherein the post or standardof the shade-supporting lighting fixture, the horn, and the loud speaker unit are all mounted on a common base and in axial alignment, whereby the necessary parts are reduced to aminimum and grouped into to attain the best sound producing compact, sightly form capable of producingin the details of construction hereinafter de-.

scribed and claimed.

In the drawings, Fig. 1 is an elevational.

view of an article embodying my invention, certain parts thereof being broken away to expose interior structural make-up; Fig. 2 is a bottom View of the base; Fig. 3 is an enlarged perspective view of the fixture anchor; Fig. 4 is a fragmentary sectional view illustrating portions of the fixture and shade, also the shutter device for the central opening in the shade and Fig. 5 is a plan view of the parts shown in Fig. 4.

Referring to the drawings, it will be observed that the illustrated form of my improvement includes a base A, a loud speaker unit B, a horn C for said unit, a lighting fixture and shade support D and a shade E. The speaker unit B is carried within a recess in the bottom of the base A and opens upwardly therethrough, covered wires 10 to said unit being led into the base A through a bushing 11 therein. This loud speaker unit B may be of any approved design and is preferably removably held in place within the base A by means of yielding c1ips 12. The horn C stands in upright position with its reduced end in registration with the mouth of the speaker unit B. Within said end of said horn is an anchor F resembling a tripod in form, the same having legs 13,feet 14 and ahead 15. The feet 14 are recessed in the base A and secured thereto by screws 16. The legs 13 reachupwardly and inwardly within the horn C and support the anchor head 15 axially thereof. Each leg 13, near the foot thereof, is formed with an upright portion or riser 13. These risers 13 supply horn centering, and securing elements and screws 17 and the feet 14 of the anchor F.

The lighting fixture and shade support D is of ordinary design, the same including a tubular stem 19, a hollow head 20, tubular coupling smashing, outwardf m Said 'a bushing 26' therein, Being thus supported, the fixture D isheld axially of the, horn C and entirely free from contact therewith, the result being that full and unimpairedfresonance oftone is produced by The shade- E ;is offc'u'stor'nary design and includes the usual hub 27W=ith spokes 28 secured thereto and reaching ou'twa'rdto a central ring forming the crown of the shade. Said shade E also has an ordinary drooping top'or 'cover30 with a skirt 31 and a co 'v ering fringe 32. v The hub 27 fits 'over the threadedtip 23'an'd the, nut-24, turned downiojn said tip, binds the shade E in place upon thdfiX-tureddf- The shade E is supported'near the'be'ztl of'the horn in position cupping, the atmosphere about the mouth thereof and, in addition to shading light .,from the iamps, aidsthehornC in amplifying the tones iss'u-ing'ffrom the loud speaker unit Said shadeE, a'lsote'nds to render mechanical grating .sou'nds' less pronounced, as I havedound in practice, and together ,with' the h' rnC produces, decidedly more effective and pleasing results than with a'horn alone. H

To best adapt shades of i different designs,

proportions andmaterials to a giveni'horn in reception and speaker unit, I supplyla shutter device 'G consisting merely fQf two 7 superimposed-I discs 33', "S L of paperboard." These discs hayebentral apertures therein formed to receive the tip 23 and are remot'ably placed.

" D and the binding iiut' 24. a forked clip 35 jrneaicliingvupward from the upper; disc 34 embraces a spoke 28 oibth'efshadefi and a pin 36 "reaching downward froxjn the lower dlSQi ditches in the headQQoigtlre fixture D ,1 "Bath, di's'csaa; 34 are formed with Q'pell ings 37' arranged to lfregister uponrelativer rotation of'said discs; lThus it 'will be unodithatby loosening. the nut 24fand 7g the shade E on the fixture D any I deg-its or O ening within the limits of the sliutter devicefG niayfbe' obtained and that (again setting said nut 24, the adjustment niade may be retained; The deflection of waves greater oif'l'es's degree by means of, this .shuttef dei iceiG provides for the best" amplification with given compleT rnenafy eguiprnent in shades of various de-' si ns and hiaterialsl The exposed portion iifiiasiess or shank of the horn C appears to be the mp" da i' i s 'g 'fiB fifi contour lends a pleasing appearance the article without betraying the nature thereof. In simulating thepresently vasemlamps,

thelmr enportien oiniehom C may be encompassed with ash ,1138- (dotted lines, Fig.1.) of the desired contour, care being taken to avoid contact between said shell and horn.

In designing different forms of articles embodying the present invention, T have found that tl-ieconst rrrct'ion is Well adapted to use 'not'onl-y in table Iampsas shbwhgbirt in ceiling and flooriamps as wellf In ceiling lamps;the structure-isi-riverted,

the base A then-constituting 'a eeii'ing'platei In floor lamps, the base 'A' nsual lyaconstitutes an enlargement in the lamp standard near the top thereof." In any otthetypesmentioned many varied and="pleasing effects in outward appearance may i be produced, the same efficient results bei'rrg ohtained through the coaction of the various elements as'here'- inbefore pointed out. 7

Changes in the sp-eeilicformof'niy invention, as herein disclosed, maybe made within the scope of whatis'ciaimed Withoutdeparting from the spirit ofiny invention'.

Having described my invention, 'wh'atT" claim as new and desireto preteet by-Iett-ers' Patent'is:

1. In an article combination of a base adaptedto-Teceive a reproducing unit, an anchor 'seeilffred te tbebase axially of; the sneer of sueh "a" (sf-the eisiss described; arehorn for suchuiiit', the'redfice'd end thereof being designed *to" it over seas anehor, said anchor including horn centering I was ing .means, a. lighting'and? "slia'tle-snppai'tii' ng fixture reaching ithruiglf the "Without contact-therewith and sairea tos'aidanhbr,

and ashad -flcarrieci by said same ana -su ping the atmosphere aboutithe' no the'horn.

2. In an artidleoifC-the class 'dsc'ri' ,"the combination ofa base adapted to*-receii7e'a-* reproducingunit, a horniorsuch ried by saidbase, "an anchefiirthe of the anchor bein Held faxiailiyfof said horn, lighting an 1 shade=su1iportifigffi3p ture including a'stemfsaidflstgmbeing secured to the headof said anchor, ian dia shade carried bygsa'id ifiiitnre midi the atmosphere "aboutithei'open end hi said horn. i

3. In an a'rticleofthevolass"describeihthe combination I ,of a base adaptedto" a:

a tripod, the legs chaser-being inside of reproducing unitga mit en ried by said base,"ananhorseciiredftothe base within the horn, a lightingiahd supporting fixtu e reaching througlr' the horn withoutcontact therewith and secured to said anchor, and a shade carried by said fixture and cupping the atmosphere about the open end of said horn.

4. In an article of the class described, the combination of a base adapted to receive a reproducing unit, a horn for such unit carried by said base, a lighting and shadesupporting fixture also carried by the base, a shade cupping the atmosphere about the mouth of said horn, said shade having a central opening therein and mounted on said support with said opening aligned axially with the mouth of the horn and an adjustable shutter device for said opening adapted to variably obstruct the passage of sound from the horn through said opening in said shade.

5. In an article of the class described, the combination of a base adapted to receive a reproducing unit, a horn for such unit carried by said base, a lighting and shade supporting fixture also carried by the base, a shade cup-ping the atmosphere about the mouth of the horn and formed to permit of the unobstructed passage of sound from the horn centrally therethrough, and an ad justable shutter arranged to control such exit of sound from said part of said shade.

6. In an article of the class described, the combination of a base adapted to receive a reproducing unit, a horn for such unit carried by said base, a lighting and shade-supporting fixture reaching through said horn and anchored to said base, and a shade carried by said fixture and encompassing the atmosphere about the open end of said horn.

7. In an article of the class described, the combination of a base adapted to receive a sound reproducing unit, a horn for such unit, an anchor associated with said base, said anchor including reaches traversing the restricted receiving end of said horn and also including a head into which said reaches merge, a fixture stem carried axially of the horn and mounted at the restricted end thereof in the head of said anchor, a lamp supported upon the stem, and a shade for said lamp supported upon said stem to receive and conceal the bell of said horn.

8. In an article of the class described, a base adapted to receive a sound reproducing unit, a horn for such unit, an anchor on said base reaching into the receiving end of said horn, a fixture stem fitted in said anchor and reaching out of the mouth of said horn, and a lamp and a shade therefor, both supported by said stem.

9. In an article of the class described, a base adapted to receive a sound reproducing unit, a horn for such unit, a fixture stem, an anchor on the base fitting within the restricted end of said horn and registering the same with respect to the outlet of such unit, said anchor serving alsoto rigidly secure said horn and said stem to said base, said stem being extended out of the mouth of the horn, and a lampand a shade therefor, both supported by the stem.

In testimony whereof, I have signed my name to this specification.

FRED C. CASWELL. 

